Did you know that Mount Wilson Observatory was where astronomer Edwin Hubble made the groundbreaking discovery that our universe is expanding? This historic site, perched at 1,740 m (5,710 ft) in the San Gabriel Mountains, has not only revolutionized our understanding of the cosmos but also offers visitors breathtaking panoramic views of Los Angeles and access to some of Southern California’s most rewarding hiking trails.
Getting There & Planning Your Journey
Mount Wilson is easily accessible by car, located just an hour’s drive from downtown Los Angeles. The journey itself is part of the experience, with the scenic Angeles Crest Highway (SR-2) offering stunning views as you wind your way up the mountain.
Closest Airports
- Hollywood Burbank Airport (BUR) – 35 km (22 miles)
- Los Angeles International Airport (LAX) – 50 km (31 miles)
Driving Directions
From Los Angeles, take the I-210 East and exit at Angeles Crest Highway (SR-2). Continue for 14 km (9 miles) to Red Box Junction, then turn right onto Mount Wilson Road for another 7 km (4.5 miles) to reach the observatory.
Ready to Start Your Mount Wilson Adventure?
Book your flights to Los Angeles and begin your cosmic journey to Mount Wilson.
Best Time to Visit Mount Wilson
The mountain’s elevation brings cooler temperatures than the Los Angeles basin, making it a refreshing escape during hot summer months. However, weather conditions can change rapidly, so checking the forecast before your visit is essential.
Recommended Months
- April to June: Spring brings mild temperatures (15-21°C/59-70°F) and wildflowers along hiking trails.
- September to November: Fall offers clear skies ideal for observatory visits and photography, with temperatures ranging from 12-18°C (54-64°F).
Months to Avoid
- December to March: Winter can bring snow and ice, occasionally causing road closures. The observatory may have limited hours during this period.
- July to August: While still pleasant at the summit, these months can be hot for hiking, with afternoon thunderstorms possible.
The Mount Wilson Observatory is open daily from 10:00 AM to 5:00 PM, except during winter closures. Special nighttime viewing events require advance reservations.
Getting Around Locally
Once you’ve arrived at Mount Wilson, getting around is primarily done on foot. The observatory grounds are compact and walkable, with paved paths connecting the main facilities. For exploring the surrounding trails, sturdy hiking shoes are recommended.
Transportation Options
- Personal Vehicle: The most convenient option, with parking available at the observatory ($6 parking fee).
- Hiking: Several trails lead to Mount Wilson from various trailheads in the San Gabriel Mountains.
- Bicycle: Popular with cycling enthusiasts, though the climb is challenging.
Need Transportation for Your Visit?
Rent a car to explore Mount Wilson and the surrounding Angeles National Forest at your own pace.
Where to Stay
While there are no accommodations on Mount Wilson itself, several options are available in nearby communities. Many visitors choose to make a day trip from Los Angeles, but staying closer to the mountain allows for early morning hikes and stargazing opportunities.
Nearby Towns
- La Cañada Flintridge: Closest community to Mount Wilson, with several hotels and B&Bs.
- Pasadena: Offers a range of accommodations from budget to luxury, 30 minutes from Mount Wilson.
- Sierra Madre: Charming small town at the base of Mount Wilson with boutique lodging options.
Camping Options
- Hoegees Campground: Primitive camping along the Winter Creek Trail.
- Spruce Grove: Backcountry campsite accessible via the Gabrielino Trail.
- Valley Forge Camp: Located in the West Fork of the San Gabriel River.
Planning Tips
- Book accommodations in advance during summer and fall weekends.
- Camping requires a Forest Adventure Pass ($5 daily or $30 annual).
- Consider staying in Pasadena if you want access to restaurants and nightlife.
Find Your Perfect Stay Near Mount Wilson
Browse accommodations in nearby communities for easy access to all Mount Wilson attractions.
Dining & Local Cuisine
Dining options on Mount Wilson itself are limited, but the Cosmic Cafe at the observatory offers light meals, snacks, and beverages during the summer season. For more substantial dining, you’ll need to visit the surrounding communities.
On-Mountain Options
- Cosmic Cafe: Open weekends from April through November, serving sandwiches, salads, and snacks.
- Picnic Areas: Several designated picnic spots are available on the observatory grounds.
Nearby Dining
The communities of La Cañada Flintridge, Altadena, and Sierra Madre offer various dining options, from casual cafes to fine dining establishments. Many hikers stop at these locations before or after their Mount Wilson adventure.
Local Tip: Pack plenty of water and snacks for hiking, especially if you’re planning a full-day excursion. The mountain environment can be dehydrating even on cool days.
Attractions, Sightseeing & Activities
Mount Wilson Observatory
The crown jewel of Mount Wilson is its historic observatory, where astronomers made groundbreaking discoveries about our universe. The observatory complex includes several telescopes, a museum, and educational exhibits.
- 100-inch Hooker Telescope: Once the world’s largest telescope, where Edwin Hubble discovered the expanding universe.
- 60-inch Telescope: Built in 1908, it was the largest operational telescope in the world until 1917.
- Solar Telescopes: The 150-foot solar tower provides detailed observations of the sun.
- CHARA Array: Modern interferometer system that continues cutting-edge astronomical research.
Scenic Viewpoints
Mount Wilson offers spectacular panoramic views of the Los Angeles basin, the San Gabriel Mountains, and on clear days, the Pacific Ocean and Catalina Island.
- Echo Rock: Located on the east side of the observatory grounds, offering expansive views.
- Observatory Parking Lot: Particularly stunning at sunset and for night views of the city lights.
Experience Mount Wilson’s Attractions
Book a guided tour of the observatory and other Mount Wilson highlights.
Hiking Trails & Outdoor Experiences
Mount Wilson boasts some of the most popular hiking trails in the San Gabriel Mountains, offering everything from easy nature walks to challenging full-day hikes.
Easy Trails
- Observatory Walking Trail: 1.6 km (1 mile) loop around the observatory grounds with interpretive signs.
- Echo Rock Trail: Short path to a panoramic viewpoint on the east side of the observatory.
- Rim Trail (First Section): 1.4 km (0.9 miles) round trip with stunning views before the steep descent begins.
Moderate Trails
- Rim Trail to Newcomb Pass: 11.6 km (7.2 miles) round trip with 490 m (1,600 ft) elevation gain.
- Winter Creek Trail: 8 km (5 miles) loop from Chantry Flat through shaded forest.
- Mt. Zion Trail: 10 km (6.2 miles) round trip connecting Hoegees and Spruce Grove camps.
Challenging Trails
- Mount Wilson Trail: 23.3 km (14.5 miles) round trip with 1,740 m (5,700 ft) elevation gain from Sierra Madre.
- Sturtevant Trail: 19.3 km (12 miles) round trip from Chantry Flat.
- Kenyon DeVore Trail: 16.1 km (10 miles) round trip from West Fork.
Hiking Safety: Always carry plenty of water, sun protection, and a map. Cell service is limited on many trails. Let someone know your planned route and expected return time.
Museums, Cultural Spots & Festivals
Mount Wilson Observatory Museum
Located in the main observatory building, this free museum chronicles the history of Mount Wilson and its significant contributions to astronomy. Exhibits include historical photographs, instruments, and interactive displays explaining the groundbreaking discoveries made here.
CHARA Array Exhibit Hall
This modern facility showcases current research being conducted by Georgia State University on stars and other planetary systems using the Center for High Angular Resolution Astronomy (CHARA) Array.
Special Events
- Weekend Docent Tours: Guided tours of the observatory facilities, including the historic telescopes.
- Night Observing Sessions: Scheduled throughout the year, allowing visitors to view celestial objects through the historic telescopes.
- Concerts in the Dome: Occasional musical performances held in the 100-inch telescope dome, known for its unique acoustics.
Nearby Cultural Attractions
In the surrounding communities, you’ll find additional cultural sites related to Mount Wilson’s history:
- Lizzies Trail Inn Historical Museum: Located in Sierra Madre at the base of the Mount Wilson Trail, documenting the history of the trail and early hikers.
- Pasadena’s Jet Propulsion Laboratory: NASA facility offering tours that complement the astronomical theme of a Mount Wilson visit.
Safety, Etiquette & Local Customs
Safety Considerations
- Fire Safety: Mount Wilson is in a high fire danger area. Never smoke on trails or discard cigarettes outdoors.
- Wildlife: Be aware of potential encounters with bears, mountain lions, and rattlesnakes. Keep a safe distance and never feed wildlife.
- Weather Changes: Mountain weather can change rapidly. Bring layers even on warm days, as temperatures drop significantly after sunset.
- Trail Safety: Stay on marked trails to prevent erosion and avoid getting lost. Hiking poles can be helpful on steeper sections.
Observatory Etiquette
- Speak quietly near telescopes and research facilities.
- Do not touch equipment unless invited to do so by staff.
- Flash photography is prohibited inside telescope domes.
- During night events, use only red flashlights to preserve night vision.
Cell phone service is limited on Mount Wilson and virtually non-existent on many trails. Download maps in advance and consider bringing a portable charger.
Visitor Comments About Mount Wilson
“The Mount Wilson Trail was challenging but absolutely worth it! The views of LA from the top are spectacular, and touring the observatory where they discovered the expanding universe gave me goosebumps. Don’t miss the Echo Rock viewpoint!”
“We visited during a nighttime telescope viewing event and it was magical. Seeing Saturn’s rings through the historic 60-inch telescope was an unforgettable experience. The astronomers were so knowledgeable and passionate about sharing the night sky with us.”
“The Rim Trail offered the perfect balance of challenge and beauty. We started early to avoid the heat and were rewarded with wildflowers and bird sightings. The Cosmic Cafe was a welcome sight for lunch with its amazing views of the Los Angeles basin.”
Practical Travel Tips
What to Bring
- Plenty of water (at least 2 liters per person for hiking)
- Sun protection (hat, sunscreen, sunglasses)
- Layers for changing temperatures
- Sturdy hiking shoes for trails
- Binoculars for wildlife and distant views
- Camera for capturing panoramic vistas
Fees & Permits
- Observatory grounds: Free admission
- Parking fee: $6 per vehicle
- Forest Adventure Pass: Required for parking at most trailheads ($5 daily, $30 annual)
- Guided tours: $15 per person (weekends only)
- Night observing sessions: $25-100 depending on telescope and program
Planning Resources
- Mount Wilson Observatory website for current hours and events
- Angeles National Forest website for trail conditions and closures
- CalTrans for road conditions on Angeles Crest Highway
- Mount Wilson Webcam for current weather conditions
- AllTrails app for detailed trail maps and user reports
Your Cosmic Adventure Awaits
Mount Wilson offers a rare combination of natural beauty, scientific history, and outdoor adventure that makes it truly special among Southern California destinations. Whether you’re gazing at distant galaxies through historic telescopes, challenging yourself on scenic hiking trails, or simply soaking in the panoramic views of Los Angeles spread out below, Mount Wilson creates memories that will stay with you long after you descend from its lofty heights. As you plan your visit, remember that you’re following in the footsteps of pioneering astronomers who forever changed our understanding of the universe from this very mountain. Your own Mount Wilson adventure awaits—where will your discoveries lead?
The above is subject to change.
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